CN103408810A - Sealing gasket for hydraulic cylinder and preparation method thereof - Google Patents
Sealing gasket for hydraulic cylinder and preparation method thereof Download PDFInfo
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- CN103408810A CN103408810A CN2013102733360A CN201310273336A CN103408810A CN 103408810 A CN103408810 A CN 103408810A CN 2013102733360 A CN2013102733360 A CN 2013102733360A CN 201310273336 A CN201310273336 A CN 201310273336A CN 103408810 A CN103408810 A CN 103408810A
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Abstract
The invention discloses a sealing gasket for a hydraulic cylinder and a preparation method thereof. The sealing gasket is prepared from the raw materials including nitrile rubber, epichlorohydrin rubber, polyformaldehyde (POM), polyisobutene, 2,4-dichlorobenzoyl peroxide, 2,2'-disulfide dibenzo thiazine, dioctyl sebacate, n-butyl methacrylate, microcrystalline wax, modified wollastonite, nano sepiolite, calcium sulfate whiskers and the like. On the basis of blending of the nitrile rubber and the epichlorohydrin rubber, POM and polyisobutene are also added, so that the performances such as the oil resistance, the temperature tolerance, the abrasive resistance, the compressive strength and the like of the rubber can be improved; and the modified wollastonite is also added, so that the dispersibility of the wollastonite in the rubber can be obviously improved; and the performances such as the mechanical strength, the oil resistance, the abrasive resistance, the high thermal resistance and the like of a seal material are improved.
Description
Technical field
The present invention relates to a kind of gasket and preparation method thereof, be specifically related to a kind of hydro-cylinder gasket and preparation method thereof.
Background technology
Gasket is an important component part of hydro-cylinder, is used for preventing the leakage of working medium and the intrusion of extraneous dust and foreign matter.The over-all properties of gasket is the important indicator of weighing the hydraulic efficiency system quality.Yet existing gasket sealing property is undesirable, wear resistance is poor, intensity is low, ageing-resistant poor, the defect such as oil-proofness is poor, far can not meet actual requirement, easily cause the phenomenons such as expansion, aging cracking, leakage of oil, thereby cause hydraulic efficiency plant to work, therefore be badly in need of a kind of high-performance sealed pad of exploitation.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of high strength, oil-proofness is good, wear resistance is good, the hydro-cylinder of low compression set is with gasket and preparation method thereof, to meet the work requirements of hydro-cylinder.
The technical solution used in the present invention is as follows:
A kind of hydro-cylinder gasket, raw material by following weight part is made: paracril (CR322) 60-70, chlorohydrin rubber (H45) 15-25, POM 10-15, polyisobutene 8-12, 2, 4-dichlorobenzoperoxide 2-3, 2.2'-curing Dibenzo thiophene 1-2, dioctyl sebacate 3-5, n-BMA 4-6, microcrystalline wax 5-8, modified grammite 10-15, nanometer sepiolite 5-10, calcium sulfate crystal whiskers 4-8, zinc oxide 2-3, magnesium oxide 1-2, carbon black N339 10-15, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 1-2, tetramethyl-thiuram disulfide 2-3, anti-aging agent OD 1-2, antioxidant NBC 2-3, antioxidant 1010 1-2, irgasfos 168 1-2.
Described modified grammite preparation method is as follows:
A. getting dried wollastonite powder is broken to below 15 μ m, drop in Scattered Kettle, add wollastonite amount 2-4 deionized water doubly, under stirring, add again the sodium polyacrylate of 2-3%, the tricalcium phosphate of 1-2%, the Coconut Fatty Acid Monoethanolamide of 2-3%, the rice hull ash of 1-2%, the organobentonite of 3-4%, 2000-3000rpm high speed dispersion 20-30min, through sand mill, grind to form slurry, stand-by;
B. getting the Nano silica sol that is equivalent to wollastonite amount 20-30% adds in stirrer, under stirring, add tetra isopropyl two (the dioctyl phosphorous acid acyloxy) titanic acid ester of 0.5-1%, the nano-sized carbon of 3-4%, the nano aluminum nitride of 1-2%, the Praseodymium trioxide of 2-3% and the sodium laurylsulfate of 1-2%, 50-60 ℃ of dispersed with stirring 30-40min, cooling rear stand-by;
C. above-mentioned pretreated silicon sol is mixed with the slurry that step (a) makes, add the benzene emulsion of 5-8%, the propylene glycol phenylate of 1-2% and the Lauryl Alcohol ester of 2-3%, stir 30-50min, filter, dry, pulverize porphyrize, cross the 200-300 mesh sieve and get final product.
A kind of hydro-cylinder preparation method of gasket, comprise the following steps: get POM, polyisobutene, nanometer sepiolite, magnesium oxide in mixing roll under 40-50 ℃ mixing 4-8min, discharge, after placing 24-36h, with paracril, chlorohydrin rubber, modified grammite, calcium sulfate crystal whiskers, microcrystalline wax, add in mixing roll in proportion mixing 5-10min under 50-60 ℃; The sizing material mixed is added in mill, then add all the other raw materials under 85-95 ℃, to refine glue 3-6min, 5-8 rear lower sheet of thin-pass; By film vulcanizing press compression moulding under 15-20MPa pressure, then carry out twice sulfidizing, the curing temperature of primary vulcanization is controlled at 175-185 ℃, curing time is 4-7min, vulcanize for the second time in baking oven and carry out, curing temperature is 200-220 ℃, and curing time is 2-4h, deburring, check, packing, get product.
Beneficial effect of the present invention:
The present invention is on the basis of paracril, chlorohydrin rubber blend, POM, polyisobutene have been added again, can improve the performances such as oil resistant, heatproof, wear resistance and ultimate compression strength of rubber, also added the wollastonite powder of modification, can obviously improve the dispersiveness of wollastonite in rubber, improve the performances such as physical strength, oil-proofness, wear resistance and high thermal resistance of sealing material.The gasket excellent combination property that the present invention produces, good sealing effect, high oil resistant, chemical stability is good, and erosion resistance is good, in acid, alkali, energy long term operation in the wet goods medium, be difficult for expanding, chapping; Also have the advantages such as good compression resilience, high thermal resistance, ageing-resistant, wear resistance, durable in use.
Embodiment
A kind of hydro-cylinder gasket, raw material by following weight (kg) is made: paracril (CR322) 64, chlorohydrin rubber (H45) 165, POM 12, polyisobutene 10, 2, 4-dichlorobenzoperoxide 2, 2.2'-curing Dibenzo thiophene 1.5, dioctyl sebacate 4, n-BMA 5, microcrystalline wax 6, modified grammite 12, nanometer sepiolite 8, calcium sulfate crystal whiskers 6, zinc oxide 2, magnesium oxide 1.5, carbon black N339 15, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 1.5, tetramethyl-thiuram disulfide 2, anti-aging agent OD 2, antioxidant NBC 2, antioxidant 1010 2, irgasfos 168 1.
Described modified grammite preparation method is as follows:
A. getting dried wollastonite powder is broken to below 15 μ m, drop in Scattered Kettle, the deionized water that adds 3 times of wollastonite amounts, under stirring, add again 3% sodium polyacrylate, 1.5% tricalcium phosphate, 2% Coconut Fatty Acid Monoethanolamide, 1% rice hull ash, 3% organobentonite, 2000rpm high speed dispersion 30min, through sand mill, grind to form slurry, stand-by;
B. getting the Nano silica sol that is equivalent to wollastonite amount 20% adds in stirrer, under stirring, add 0.6% tetra isopropyl two (dioctyl phosphorous acid acyloxy) titanic acid ester, 3% nano-sized carbon, 2% nano aluminum nitride, 3% Praseodymium trioxide and 1.5% sodium laurylsulfate, 60 ℃ of dispersed with stirring 30min, cooling rear stand-by;
C. above-mentioned pretreated silicon sol is mixed with the slurry that step (a) makes, add 6% benzene emulsion, 1.5% propylene glycol phenylate and 2% Lauryl Alcohol ester, stir 40min, filter, dry, pulverize porphyrize, cross 300 mesh sieves and get final product.
A kind of hydro-cylinder preparation method of gasket, comprise the following steps: get POM, polyisobutene, nanometer sepiolite, magnesium oxide in mixing roll under 45 ℃ mixing 6min, discharge, after placing 36h, with paracril, chlorohydrin rubber, modified grammite, calcium sulfate crystal whiskers, microcrystalline wax, add in mixing roll in proportion mixing 5min under 60 ℃; The sizing material mixed is added in mill, then add all the other raw materials under 90 ℃, to refine glue 4min, thin-pass is descended sheet 6 times afterwards; By film vulcanizing press compression moulding under 16MPa pressure, then carry out twice sulfidizing, the curing temperature of primary vulcanization is 175 ℃, curing time is 6min, vulcanize for the second time in baking oven and carry out, curing temperature is 215 ℃, and curing time is 3h, deburring, check, packing, get product.
Gasket Performance Detection of the present invention is as follows:
Claims (2)
1. hydro-cylinder gasket, it is characterized in that, raw material by following weight part is made: paracril (CR322) 60-70, chlorohydrin rubber (H45) 15-25, POM 10-15, polyisobutene 8-12, 2, 4-dichlorobenzoperoxide 2-3, 2.2'-curing Dibenzo thiophene 1-2, dioctyl sebacate 3-5, n-BMA 4-6, microcrystalline wax 5-8, modified grammite 10-15, nanometer sepiolite 5-10, calcium sulfate crystal whiskers 4-8, zinc oxide 2-3, magnesium oxide 1-2, carbon black N339 10-15, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 1-2, tetramethyl-thiuram disulfide 2-3, anti-aging agent OD 1-2, antioxidant NBC 2-3, antioxidant 1010 1-2, irgasfos 168 1-2,
Described modified grammite preparation method is as follows:
A. getting dried wollastonite powder is broken to below 15 μ m, drop in Scattered Kettle, add wollastonite amount 2-4 deionized water doubly, under stirring, add again the sodium polyacrylate of 2-3%, the tricalcium phosphate of 1-2%, the Coconut Fatty Acid Monoethanolamide of 2-3%, the rice hull ash of 1-2%, the organobentonite of 3-4%, 2000-3000rpm high speed dispersion 20-30min, through sand mill, grind to form slurry, stand-by;
B. getting the Nano silica sol that is equivalent to wollastonite amount 20-30% adds in stirrer, under stirring, add tetra isopropyl two (the dioctyl phosphorous acid acyloxy) titanic acid ester of 0.5-1%, the nano-sized carbon of 3-4%, the nano aluminum nitride of 1-2%, the Praseodymium trioxide of 2-3% and the sodium laurylsulfate of 1-2%, 50-60 ℃ of dispersed with stirring 30-40min, cooling rear stand-by;
C. above-mentioned pretreated silicon sol is mixed with the slurry that step (a) makes, add the benzene emulsion of 5-8%, the propylene glycol phenylate of 1-2% and the Lauryl Alcohol ester of 2-3%, stir 30-50min, filter, dry, pulverize porphyrize, cross the 200-300 mesh sieve and get final product.
2. a hydro-cylinder as claimed in claim 1 is by the preparation method of gasket, it is characterized in that comprising the following steps: get POM, polyisobutene, nanometer sepiolite, magnesium oxide in mixing roll under 40-50 ℃ mixing 4-8min, discharge, after placing 24-36h, with paracril, chlorohydrin rubber, modified grammite, calcium sulfate crystal whiskers, microcrystalline wax, add in mixing roll in proportion mixing 5-10min under 50-60 ℃; The sizing material mixed is added in mill, then add all the other raw materials under 85-95 ℃, to refine glue 3-6min, 5-8 rear lower sheet of thin-pass; By film vulcanizing press compression moulding under 15-20MPa pressure, then carry out twice sulfidizing, the curing temperature of primary vulcanization is controlled at 175-185 ℃, curing time is 4-7min, vulcanize for the second time in baking oven and carry out, curing temperature is 200-220 ℃, and curing time is 2-4h, deburring, check, packing, get product.
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| CN2013102733360A CN103408810A (en) | 2013-07-01 | 2013-07-01 | Sealing gasket for hydraulic cylinder and preparation method thereof |
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| CN2013102733360A CN103408810A (en) | 2013-07-01 | 2013-07-01 | Sealing gasket for hydraulic cylinder and preparation method thereof |
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| CN103408810A true CN103408810A (en) | 2013-11-27 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105837876A (en) * | 2016-04-14 | 2016-08-10 | 安徽精机械设备有限公司 | Nitrile rubber sealing gasket for aviation hydraulic fluid sealing and preparation method of nitrile rubber sealing gasket |
| CN105885140A (en) * | 2016-04-25 | 2016-08-24 | 铜陵百锐设备配件有限公司 | Calcium sulfate crystal whisker modified rubber sealing member and preparation method thereof |
| CN106147048A (en) * | 2015-03-31 | 2016-11-23 | 3M创新有限公司 | Sealing compositions and application thereof |
| CN107286624A (en) * | 2017-08-01 | 2017-10-24 | 合肥康之恒机械科技有限公司 | A kind of low temperature resistant sealing gasket of plant equipment |
| EP3255088A1 (en) | 2016-06-07 | 2017-12-13 | ARLANXEO Deutschland GmbH | Use of vulcanizable compositions and vulcanizates in contact with silane-coated wollastonite containing coolant |
| CN111825944A (en) * | 2020-07-31 | 2020-10-27 | 海信容声(广东)冰箱有限公司 | Refrigerator liner, refrigerator liner material and preparation method thereof |
| CN113402791A (en) * | 2020-03-17 | 2021-09-17 | 中国石油化工股份有限公司 | Nitrile rubber-based vulcanized composition, vulcanized rubber, and preparation method and application thereof |
| CN113493578A (en) * | 2020-03-18 | 2021-10-12 | 中国石油化工股份有限公司 | Rubber composition based on ethylene propylene diene monomer and nitrile rubber, vulcanized rubber, and preparation method and application thereof |
| WO2022071279A1 (en) * | 2020-09-30 | 2022-04-07 | 株式会社大阪ソーダ | Rubber composition |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147048A (en) * | 2015-03-31 | 2016-11-23 | 3M创新有限公司 | Sealing compositions and application thereof |
| CN105837876A (en) * | 2016-04-14 | 2016-08-10 | 安徽精机械设备有限公司 | Nitrile rubber sealing gasket for aviation hydraulic fluid sealing and preparation method of nitrile rubber sealing gasket |
| CN105885140A (en) * | 2016-04-25 | 2016-08-24 | 铜陵百锐设备配件有限公司 | Calcium sulfate crystal whisker modified rubber sealing member and preparation method thereof |
| EP3255088A1 (en) | 2016-06-07 | 2017-12-13 | ARLANXEO Deutschland GmbH | Use of vulcanizable compositions and vulcanizates in contact with silane-coated wollastonite containing coolant |
| WO2017211645A1 (en) | 2016-06-07 | 2017-12-14 | Arlanxeo Deutschland Gmbh | Use of vulcanizable compositions and vulcanizates in contact with coolant, comprising silane-coated wollastonite |
| CN107286624A (en) * | 2017-08-01 | 2017-10-24 | 合肥康之恒机械科技有限公司 | A kind of low temperature resistant sealing gasket of plant equipment |
| CN113402791A (en) * | 2020-03-17 | 2021-09-17 | 中国石油化工股份有限公司 | Nitrile rubber-based vulcanized composition, vulcanized rubber, and preparation method and application thereof |
| CN113402791B (en) * | 2020-03-17 | 2022-09-20 | 中国石油化工股份有限公司 | Nitrile rubber-based vulcanized composition, vulcanized rubber, and preparation method and application thereof |
| CN113493578A (en) * | 2020-03-18 | 2021-10-12 | 中国石油化工股份有限公司 | Rubber composition based on ethylene propylene diene monomer and nitrile rubber, vulcanized rubber, and preparation method and application thereof |
| CN113493578B (en) * | 2020-03-18 | 2023-03-14 | 中国石油化工股份有限公司 | Rubber composition based on ethylene propylene diene monomer and nitrile rubber, vulcanized rubber, and preparation method and application thereof |
| CN111825944A (en) * | 2020-07-31 | 2020-10-27 | 海信容声(广东)冰箱有限公司 | Refrigerator liner, refrigerator liner material and preparation method thereof |
| WO2022071279A1 (en) * | 2020-09-30 | 2022-04-07 | 株式会社大阪ソーダ | Rubber composition |
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Application publication date: 20131127 |